Blender Internal glossy BSDF equivalent?
I'd like to add some information about the settings on top of micgdev's answer:

Reflectivity: There you define how strong the reflection is. 1 is fully reflective, 0 means no reflection at all. A fully reflective surface is non-existant, even a mirror is around 0.9..

Fresnel: Do you know the effect when you're looking at car windows from different angles? One time (when you face them) it's almost transparent, the other time it's almost a mirror (looking at them from the side). This effect is the fresnel effect and you enable it with this slider.

Glossy: With a glossy "amount" value below 1 you're setting the glossiness. 1 means very glossy, all below 1 means that the reflection will be blurred out. 

Anisotropic: With this slider you can alter the reflection kind. If you're turning it up, the reflection will behave more and more like under a pot (become more and more circular).

I think that should set you up for the first steps...but read the documentation and experiment - there is so much to test and find out :)